Talking Points Memo posted it here, with the caveat that its authenticity couldn't be verified.
Business Insider posted it here, with no caveats whatsoever.
Here is the video:
There's just one problem: The perspective of the videographer was to the northeast on Franklin Street, whereas the alleged house with the boat in back is to the southwest, at least five or six houses away from where all that gunfire occurred.
Click here for a hi-res version of the image below.
Why? Perhaps there's a logical explanation I haven't been able to think of. If you can come up with one, let me know in the comments section.